Apparatus for washing fibrous materials used in paper-making.



No. 649,152. Patented may 8,1900.

-J..H. ANNANDALE.

APPARATUS FOR WASHING FIBROUS MATERIALS USED IN PAPER MAKING.

(Application filed Sept. 29, 1899.)

(No Model.)

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NITED STATES PATENT OFFICE JAMES HUNTER ANNANDALE, OF'POLTON, SCOTLAND.

APPARATUS FOR WASHING FIBROUS MATERIALS USED IN PAPER-MAKING.

SPECIFICATION forming part of Letters Patent No. 649,152, dated May 8,1900.

' Application filed September 29, 1899- Serlal No. 7321084. (No model.)

To ctZZ whom it may concern:

Be it known that I, JAMES HUNTER ANNAN- DALE, a subject of the Queen ofthe United Kingdom of Great Britain and Ireland, residing at PoltonPaper Works, Bolton, Mid- Lothian, Scotland, have invented certain newand useful Improvements in Apparatus for WVashing Fibrous Materials Usedin. Paper Making and for other Purposes, (which was patented in GreatBritain on the 4th day of March, 1899, No. 4,756,) of which thefollowing is a specification.

This invention relates to apparatus for washing fibrous materials usedin papermaking and for other purposes; and it has for its object toprovide improved apparatus in which the fibrous materials may beeffectually freed from coloring-matters and other impurities by feedingthem slowly forward while turning them and exposing fresh surfacesagainst a stream of water and so that after washing they are deliveredfrom the apparatus upon their passage through the cleaner in flowingwater,

The invention is illustrated by the accompanying drawings.

Figure 1 is a longitudinal sectional view of the apparatus. Fig. 2 is across-sectional View of the same, and Fig. 3 is an end elevation.

The vat or trough A is mounted upon a suitable support and receives thedrum B, arranged horizontally, having end trunnions J K, journaled insuitable bearings. The drum B, which is formed of a perforated shell,has a series of ribs 0, projecting radially from its inner periphery andspaced a distance apart. A blade D is wound helically around the innerperipheryof the shell B and extends from end to end thereof. One end Bof the drum B is conical or made of gradually-diminishing diameter, andat that end the washingwater is admitted by a pipe E and the cleansedmaterial delivered through acentral opening in the trunnion J, while atthe opposite end a central opening is formed in the trunnion K, leadinginto the drum, for the admission of the unwashed material. Thedrum B maybe rotated on the trunnions J K at the inlet and outlet, or it may becarried on rollers F, as shown, or otherwise supported as to permit ofits rotation. The helical blade or worm D within the drum B is bypreference perforated to permit of the free passage through it of thewashing-water, and in the bottomof the vat or trough A is formed atransverse vertical web or webs G to prevent the direct passage of theclean water toward the outlet, and in conjunction with these webs Glikeshaped leather strips I are preferably provided, which by the actionof the water in the drum B are caused to bear against the side of ringsI-I, surrounding the drum B, and thus act as valves to prevent thedirect passage of the water.

In the operation of the apparatus the fibrous materials are fed into thetrunnion K of the drum B, while the Washingwater enters through theother trunnion J through the central pipe E, which delivers it into theconical end B The materials are by the rotation of the drum B and helixD gradually traversed along the length of the drum B and through thewashing-water in the vat A, the level of which water is maintained atabout the depth of the helical blade D or so as-to insure the immersionof the materials carried along by it. During the rotation of the drum Bthe fibrous materials are also repeatedly lifted and turned over bymeans of the longitudinal spars C of the drum B. In this way thematerials are traversed against the stream of infiowingwater which flowsthrough the perforations of the drum and helix D, and at the farther endthey are raised up by the conical end of portion B of the drum B clearof the water and delivered through the narrow out removingcoloring-matter and chemical .re

agents employed in treating fibrous materials said ribs and prevent thepassage of water, 10 and for washing Wood or like fibers. substantiallyas described. 7

Having now described the invention, what In witness whereof I havehereunto set my I claim, and desire to secure by Letters Pathand inpresence of two Witnesses. 5 ent, is-- In combination, a trough, a drummounted JAMES HUNTER ANNANDALE' therein, means for rotating the drum,ribs I Vitnesses: projecting from said trough and leather rings ROBERTMACLACHLAN, carried by the drum to press firmly against JOHN MACLACHLAN.

